New feature: CLI support

readme.md

@@ -224,6 +224,18 @@ $ bower install ua-parser-js
 $ meteor add faisalman:ua-parser-js
 ```
 
+## Using CLI
+
+```sh
+$ node ua-parser.min.js "Mozilla/4.0 (compatible; MSIE 4.01; Windows 98)"
+# multiple args
+$ node ua-parser.min.js "Opera/1.2" "Opera/3.4"
+# piped args
+$ echo "Opera/1.2" | node ua-parser.min.js
+# log file
+$ cat ua.log | node ua-parser.min.js
+```
+
 ## Using jQuery/Zepto ($.ua)
 
 Although written in vanilla js (which means it doesn't depends on jQuery), this library will automatically detect if jQuery/Zepto is present and create `$.ua` object based on browser's user-agent (although in case you need, `window.UAParser` constructor is still present). To get/set user-agent you can use: `$.ua.get()` / `$.ua.set(uastring)`. 

src/ua-parser.js

@@ -996,6 +996,33 @@
         if (typeof module !== UNDEF_TYPE && module.exports) {
             exports = module.exports = UAParser;
         }
+        // TODO: test!!!
+        if (require && require.main === module && process) {
+            // cli
+            var jsonize = function (arr) {
+                var res = [];
+                for (var i in arr) {
+                    res.push(new UAParser(arr[i]).getResult());
+                }
+                process.stdout.write(JSON.stringify(res, null, 2) + '\n');
+            };
+            if (process.stdin.isTTY) {
+                // via args
+                jsonize(process.argv.slice(2));
+            } else {
+                // via pipe
+                var str = '';
+                process.stdin.on('readable', function() {
+                    var read = process.stdin.read();
+                    if (read !== null) {
+                        str += read;
+                    }
+                });
+                process.stdin.on('end', function () {
+                    jsonize(str.replace(/\n$/, '').split('\n'));
+                });
+            }
+        }
         exports.UAParser = UAParser;
     } else {
         // requirejs env (optional)